skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Modeling Permeability Alteration in Diatomite Reservoirs During Steam Drive, SUPRI TR-113

Abstract

There is an estimated 10 billion barrels of original oil in place (OOIP) in diatomaceous reservoirs in Kern County, California. These reservoirs have low permeability ranging from 0.1 to 10 mD. Injection pressure controlled steam drive has been found to be an effective way to recover oil from these reservoir. However, steam drive in these reservoirs has its own complications. The rock matrix is primarily silica (SiO2). It is a known fact that silica is soluble in hot water and its solubility varies with temperature and pH. Due to this fact, the rock matrix in diatomite may dissolve into the aqueous phase as the temperature at a location increases or it may precipitate from the aqueous phase onto the rock grains as the temperature decreases. Thus, during steam drive silica redistribution will occur in the reservoir along with oil recovery. This silica redistribution causes the permeability and porosity of the reservoir to change. Understanding and quantifying these silica redistribution effects on the reservoir permeability might prove to be a key aspect of designing a steam drive project in these formations.

Authors:
;
Publication Date:
Research Org.:
National Petroleum Technology Office, Tulsa, OK (US)
Sponsoring Org.:
USDOE Office of Fossil Energy (FE) (US)
OSTI Identifier:
9324
Report Number(s):
DOE/BC/14994-12
TRN: AH200122%%205
DOE Contract Number:  
FG22-96BC14994
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 9 Aug 1999
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; CALIFORNIA; OIL WELLS; PERMEABILITY; POROSITY; SILICA; SOLUBILITY; STEAM INJECTION; THERMAL RECOVERY; PETROLEUM; DIATOMACEOUS EARTH; RESERVOIR ENGINEERING; ROCK MECHANICS

Citation Formats

Bhat, Suniti Kumar, and Kovscek, Anthony R. Modeling Permeability Alteration in Diatomite Reservoirs During Steam Drive, SUPRI TR-113. United States: N. p., 1999. Web. doi:10.2172/9324.
Bhat, Suniti Kumar, & Kovscek, Anthony R. Modeling Permeability Alteration in Diatomite Reservoirs During Steam Drive, SUPRI TR-113. United States. doi:10.2172/9324.
Bhat, Suniti Kumar, and Kovscek, Anthony R. Mon . "Modeling Permeability Alteration in Diatomite Reservoirs During Steam Drive, SUPRI TR-113". United States. doi:10.2172/9324. https://www.osti.gov/servlets/purl/9324.
@article{osti_9324,
title = {Modeling Permeability Alteration in Diatomite Reservoirs During Steam Drive, SUPRI TR-113},
author = {Bhat, Suniti Kumar and Kovscek, Anthony R.},
abstractNote = {There is an estimated 10 billion barrels of original oil in place (OOIP) in diatomaceous reservoirs in Kern County, California. These reservoirs have low permeability ranging from 0.1 to 10 mD. Injection pressure controlled steam drive has been found to be an effective way to recover oil from these reservoir. However, steam drive in these reservoirs has its own complications. The rock matrix is primarily silica (SiO2). It is a known fact that silica is soluble in hot water and its solubility varies with temperature and pH. Due to this fact, the rock matrix in diatomite may dissolve into the aqueous phase as the temperature at a location increases or it may precipitate from the aqueous phase onto the rock grains as the temperature decreases. Thus, during steam drive silica redistribution will occur in the reservoir along with oil recovery. This silica redistribution causes the permeability and porosity of the reservoir to change. Understanding and quantifying these silica redistribution effects on the reservoir permeability might prove to be a key aspect of designing a steam drive project in these formations.},
doi = {10.2172/9324},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {8}
}

Technical Report:

Save / Share: